2. Atoms and the Periodic Table

Which of the following answers give the correct number of subatomic particles for ?

Which of the following answers give the correct number of subatomic particles for ?

Fill in the gaps for the following table of atoms.

Supply the missing information in the following table:

Write the atomic symbol for the isotope with each of the following characteristics:

c. 25 electrons and 28 neutrons

Argon has three naturally occurring isotopes, with mass numbers 36, 38, and 40.

c. How are they different?

Argon has three naturally occurring isotopes, with mass numbers 36, 38, and 40.

b. How are these isotopes alike?

Argon has three naturally occurring isotopes, with mass numbers 36, 38, and 40.

a. Write the atomic symbol for each of these atoms.

Consider the following atoms in which X represents the chemical symbol of the element:

¹⁶₈X ¹⁶₉X ¹⁸₁₀X ¹⁷₈X ¹⁸₈X

d. What atoms have the same number of neutrons?

Consider the following atoms in which X represents the chemical symbol of the element:

¹⁶₈X ¹⁶₉X ¹⁸₁₀X ¹⁷₈X ¹⁸₈X

c. Which atoms have the same mass number?

Consider the following atoms in which X represents the chemical symbol of the element:

¹⁶₈X ¹⁶₉X ¹⁸₁₀X ¹⁷₈X ¹⁸₈X

a. What atoms have the same number of protons?

Indicate if the atoms in each pair have the same number of protons, neutrons, or electrons.

c. ⁴⁰₁₈Ar, ³⁹₁₇Cl

Complete the following table for the three naturally occurring isotopes of silicon, the major component in computer chips:

For each representation of a nucleus A through E, write the atomic symbol and identify which are isotopes.

a. <IMAGE>

Complete the following table for three of the naturally occurring isotopes of germanium, which is a metalloid used in semiconductor.